For personal stuff (and even early machines for some companies which blurred the lines) I always chose the names of forests in the Magic: the Gathering multiverse. I try and help keep this page updated purely for that purpose:

https://mtg.fandom.com/wiki/Forest

These days, for work, it’s just boring unambiguous stuff. I think with more cloud infrastructure and the rarity of shared unix servers with home directories for people, it’s rare that I have any emotional investment in a machine. They’re basically soulless now.